MSDMSD Project Clear is a long-term effort by the Metropolitan St. Louis Sewer District (MSD), undertaken as part of an agreement with the U.S. Environmental Protection Agency and the Missouri Coalition for the Environment.

Project Clear aims to:

  • improve water quality for everyone.
  • solve problems for some of our customers created by the very nature and design of St. Louis’ wastewater system.
  • provide clear, up-to-date information to the public.

With significant investment comes a significant timeline. Though less visible than the work required to build the new Busch Stadium, or rebuild I-64, or build a new bridge, the work MSD is undertaking is equivalent to constructing 11 Busch Stadiums, rebuilding I-64 nine times, or erecting seven new Mississippi River bridges.

MSD Project Clear focuses on three categories of work: Get the rain out; Repair and maintain; and Build system improvements. Get the rain out focuses on preventing excess stormwater from entering the sewer system through a variety of project types, including downspout disconnections, and rainscaping. Repair and maintain continues the work MSD has done to repair, maintain, and renew the existing sewer system, on a faster timeline. Build system improvements involves new construction of wastewater management structures, including deep underground tunnels and above-ground storage tanks.


We appreciate your patience with our 23-year plan. Enjoy the site, and come back often to learn more about how the MSD team, in partnership with organizations and neighbors just like you, is improving the region – one drop at a time.

» Download the Project Clear brochure.

» Download the “Before Project Clear” connections diagram.

» Download the “After Project Clear” connections diagram.


You can also download a 300dpi print-ready version of the map here.